CN104269501A - Cylindrical battery cap - Google Patents
Cylindrical battery cap Download PDFInfo
- Publication number
- CN104269501A CN104269501A CN201410484418.4A CN201410484418A CN104269501A CN 104269501 A CN104269501 A CN 104269501A CN 201410484418 A CN201410484418 A CN 201410484418A CN 104269501 A CN104269501 A CN 104269501A
- Authority
- CN
- China
- Prior art keywords
- cap head
- cap
- base
- head
- sealing ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 239000004411 aluminium Substances 0.000 claims description 19
- 238000003466 welding Methods 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000036461 convulsion Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 101100450138 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-2 gene Proteins 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention provides a cylindrical battery cap which is mounted at a seal of a steel battery shell. The cylindrical battery cap comprises a cap head and a base, wherein a gasket is arranged between the cap head and the base; an anti-explosion opening aluminum film covers the base; a joint of the cap head and the base is coated with a sealing ring; a plurality of exhaust holes are formed in the side surface of the cap head; an anti-vibration structure capable of endowing axial elasticity on the cap head is arranged on the side surface of the cap head. The anti-vibration structure is arranged on the side surface of the cap head, so that the cap head has certain axial elasticity; under the action of an external force, a part of mechanical vibration impact force can be well released, pressure on the sealing ring is alleviated, the sealing ring is prevented from being damaged, and the safety is improved.
Description
Technical field
The present invention relates to a kind of columniform battery cap.
Background technology
Lithium ion battery is high with its specific energy, specific power is large, have extended cycle life, and not containing noxious substance, obtains increasingly extensive application.Especially cylindrical lithium ion battery, its sturdy and durable, good seal, easy connection in series-parallel combination, its many models are identical with the overall dimension of dry cell, ickel-cadmium cell, Ni-MH battery, and as easy as rolling off a log replacement uses, and its use is extensive especially.Therefore improving it, make it safety and reliability, is very significant.
Existing column lithium ion battery generally does positive pole exit with block, the structure of its positive terminal as shown in Figure 1, electrode group 1 ' is contained in box hat 2 ', anode ear 7 ' is had to draw from pole group, be soldered on block base 5 ', the explosion-proof unlatching aluminium film 4 ' of made with aluminum foil is to lower process, welded together with the central point of cover base.Cap head 6 ' above has the steam vent 8 ' of 6 3*3mm, once internal pressure is too high, explosion-proof unlatching aluminium film 4 ' raises up, and pulls open the solder joint with base 5 ' of blocking a shot, and disconnects external the electrically connecting of positive pole, and discharge and recharge stops, and limits dangerous further developing.If internal pressure is high again, aluminium film rupture, gases at high pressure release from steam vent.Decrease internal pressure, prevent blast.This structure is simple, effectively, is convenient to processing, but also comes with some shortcomings.Such as 1, the rigidity of block is fine, when the mutual connection in series-parallel of battery in groups time, just likely multiple battery is all pressed on this block, if be subject to the External Force Actings such as violent vibratory impulse, rigidity is well blocked a shot and external force will be passed on sealing ring 9 ' entirely, and sealing ring 9 ', by large External Force Acting, can change its operating state, airtight quality is caused to decline, the of long duration danger that just there will be leakage.If 2 pressure are too large, crown sink, and is just likely pressed onto unlatching layer below, causes and opens the film rupture of layer aluminium, seal failure.3, six steam vents on block are very large, and like this, when cap head Laser Welding, if solder joint skew, or Workpiece fixing is forbidden, and laser beam directly will be got on explosion-proof unlatching aluminium film 4 ' through steam vent 8 '.If 4, welding energy is too large when caping Laser Welding, burn the danger of cap layer in addition, the laser beam penetrated can burn downwards further opens aluminium film.Because the fusing point of aluminium is more much lower than steel, laser beam is easy to it to burn, and makes cell sealing-structure complete failure.More it is a risk that this damage be can't see in appearance at all, if this battery is loaded battery pack, the electrolyte dry-out caused along with gas leakage leakage, this battery failure, will cause the earlier period damage of whole battery pack.
Summary of the invention
The invention provides the columniform battery cap of a kind of concussion resistibility power, anti-extrusion, anti-burn-through, safety.
The technical solution used in the present invention is:
A kind of columniform battery cap, it is arranged on the sealing part of battery steel shell, comprise cap head and base, packing ring is provided with between described cap head and base, described base is covered with explosion-proof unlatching aluminium film, the junction of described cap head and base is coated with sealing ring, and the side of described cap head has multiple steam vent, it is characterized in that: the side of described cap head is provided with the anti-vibration structure making it have axial stretching.The present invention arranges anti-vibration structure in the side of cap head, makes it have certain axial stretching elasticity, when being subject to External Force Acting, some mechanical jerk power can be released well, alleviate the pressure that sealing ring bears, prevent from destroying sealing ring, improve security performance.
Further, described anti-vibration structure is provided with U-type groove at the side opening of cap head.
Or described anti-vibration structure is that Wave-shaped structural is arranged in described cap head side.
Further, the below of described cap head is placed with one deck overcoat.Overcoat prevents the welding slag when cap head burn-through from dropping and hurts explosion-proof unlatching aluminium film, improves fail safe during assembling.
Further, described steam vent be arranged on cap head side cross-drilled hole or fall hole.One prevents sealing ring from having influence on the normal pressure release of steam vent, two prevent laser beam pass steam vent be mapped to hole under the possibility of explosion-proof unlatching aluminium film.
Further, described cap head and base are direct pressing connections, laser welding is connected or ultrasonic bonding connects.
Further, the center of described explosion-proof unlatching aluminium film is connected with the center weld of base.
Beneficial effect of the present invention: against shock, anti-extrusion, anti-burn-through, improve security performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing structure.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the structural representation at cap head place of the present invention.
Fig. 4 is the first structure vertical view of cap head of the present invention.
Fig. 5 is the first structure longitudinal sectional view of cap head of the present invention.
Fig. 6 is the second structure vertical view of cap head of the present invention.
Fig. 7 is the second structure longitudinal sectional view of cap head of the present invention.
Fig. 8 is the third structure vertical view of cap head of the present invention.
Fig. 9 is the third structure longitudinal sectional view of cap head of the present invention.
Figure 10 is the 4th kind of structure vertical view of cap head of the present invention.
Figure 11 is the 4th kind of structure longitudinal sectional view of cap head of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, but does not limit the invention to these embodiments.One skilled in the art would recognize that all alternatives, improvement project and the equivalents that present invention encompasses and may comprise in Claims scope.
With reference to Fig. 2, Fig. 3, a kind of columniform battery cap, it is arranged on the sealing part of battery steel shell, comprise cap head 1 and base 2, be provided with packing ring 3 between described cap head 1 and base 2, described base 2 is covered with explosion-proof unlatching aluminium film 4, the junction of described cap head 1 and base 2 is coated with sealing ring 5, the side of described cap head 1 has multiple steam vent 6, and the side of described cap head 1 is provided with the anti-vibration structure making it have axial stretching.The present invention arranges anti-vibration structure in the side of cap head 1, makes it have certain axial stretching elasticity, when being subject to External Force Acting, some mechanical jerk power can be released well, alleviate the pressure that sealing ring 5 bears, prevent from destroying sealing ring, improve security performance.
Anti-vibration structure of the present invention is provided with U-type groove 11, as Fig. 4, Fig. 5 at the side opening of cap head 1.Described anti-vibration structure can also be that Wave-shaped structural is arranged in described cap head 1 side, as illustrated in figs. 6-11.
The below of cap head 1 of the present invention is placed with one deck overcoat 7.Overcoat 7 prevents the welding slag when cap head 1 burn-through from dropping and hurts explosion-proof unlatching aluminium film 4, improves fail safe during assembling.Described overcoat 7 can be gasket structure.
Steam vent 6 of the present invention be arranged on cap head side cross-drilled hole or fall hole.One prevents sealing ring from having influence on the normal pressure release of steam vent, two prevent laser beam pass steam vent be mapped to hole under the possibility of explosion-proof unlatching aluminium film.Steam vent 6 described in the present embodiment adopts cross-drilled hole, as shown in Fig. 4, Fig. 6, Fig. 8, Figure 10.
Cap head 1 of the present invention and base 2 are direct pressing connections, laser welding is connected or ultrasonic bonding connects.The center of described explosion-proof unlatching aluminium film 4 is connected with the center weld of base 2.
The present embodiment by adopt against shock design, the side of block 1 is provided with anti-vibration structure, increases its telescopic elastic, decrease act on block external force to the destruction of sealing ring 5.By adopt fall hole and welding slag preventing design, steam vent 6 is opened on vertical side, become cross-drilled hole or fall hole, greatly reduce its vertical projection area.Even if laser beam is got on this hole, because projected area is minimum, blocking surface is very large, also cannot throw the inside into, hurt aluminium film below, further increase the fail safe of battery.By adopting anti-extrusion design, changing macropore into aperture, increasing the intensity of cap head 1, improve the anti-extrusion ability of block.Anti-weldingly wear meter by sampling, below cap head 1, add one deck overcoat 7 again, the welding slag fallen down when can stop laser beam burn-through cap head 1 hurts aluminium film below, improves fail safe during assembling.
Claims (7)
1. a columniform battery cap, it is arranged on the sealing part of battery steel shell, comprise cap head and base, packing ring is provided with between described cap head and base, described base is covered with explosion-proof unlatching aluminium film, the junction of described cap head and base is coated with sealing ring, and the side of described cap head has multiple steam vent, it is characterized in that: the side of described cap head is provided with the anti-vibration structure making it have axial stretching.
2. a kind of columniform battery cap as claimed in claim 1, is characterized in that: described anti-vibration structure is provided with U-type groove at the side opening of cap head.
3. a kind of columniform battery cap as claimed in claim 1, is characterized in that: described anti-vibration structure is that Wave-shaped structural is arranged in described cap head side.
4. a kind of columniform battery cap as claimed in claim 1, is characterized in that: the below of described cap head is placed with one deck overcoat.
5. the columniform battery cap of the one as described in one of claim 1 ~ 4, is characterized in that: described steam vent be arranged on cap head side cross-drilled hole or fall hole.
6. a kind of columniform battery cap as claimed in claim 5, is characterized in that: described cap head and base are direct pressing connections, laser welding is connected or ultrasonic bonding connects.
7. a kind of columniform battery cap as claimed in claim 6, is characterized in that: the center of described explosion-proof unlatching aluminium film is connected with the center weld of base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410484418.4A CN104269501A (en) | 2014-09-19 | 2014-09-19 | Cylindrical battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410484418.4A CN104269501A (en) | 2014-09-19 | 2014-09-19 | Cylindrical battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104269501A true CN104269501A (en) | 2015-01-07 |
Family
ID=52161007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410484418.4A Pending CN104269501A (en) | 2014-09-19 | 2014-09-19 | Cylindrical battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104269501A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505164A (en) * | 2016-12-12 | 2017-03-15 | 苏州安靠电源有限公司 | A kind of anode block and the battery with the block |
| CN106549120A (en) * | 2016-12-12 | 2017-03-29 | 苏州安靠电源有限公司 | Anode block and the battery with the block |
| CN111173975A (en) * | 2020-01-06 | 2020-05-19 | 王晓华 | Explosion-proof valve based on lithium battery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1125950A (en) * | 1997-07-07 | 1999-01-29 | Toyota Central Res & Dev Lab Inc | Shield structure of sealed battery |
| CN201104324Y (en) * | 2007-07-12 | 2008-08-20 | 深圳市比克电池有限公司 | Secondary battery cover plate component and secondary battery adopting the same |
| CN202495541U (en) * | 2012-03-12 | 2012-10-17 | 宁德新能源科技有限公司 | Cylindrical lithium ion battery |
| CN203288709U (en) * | 2013-06-26 | 2013-11-13 | 浙江宝仕电源有限公司 | Portable anti-vibration lead-acid storage battery |
| CN203733859U (en) * | 2014-01-10 | 2014-07-23 | 超威电源有限公司 | Buffering device for pole group in storage battery |
| CN204216100U (en) * | 2014-09-19 | 2015-03-18 | 许玉林 | A kind of columniform battery cap |
-
2014
- 2014-09-19 CN CN201410484418.4A patent/CN104269501A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1125950A (en) * | 1997-07-07 | 1999-01-29 | Toyota Central Res & Dev Lab Inc | Shield structure of sealed battery |
| CN201104324Y (en) * | 2007-07-12 | 2008-08-20 | 深圳市比克电池有限公司 | Secondary battery cover plate component and secondary battery adopting the same |
| CN202495541U (en) * | 2012-03-12 | 2012-10-17 | 宁德新能源科技有限公司 | Cylindrical lithium ion battery |
| CN203288709U (en) * | 2013-06-26 | 2013-11-13 | 浙江宝仕电源有限公司 | Portable anti-vibration lead-acid storage battery |
| CN203733859U (en) * | 2014-01-10 | 2014-07-23 | 超威电源有限公司 | Buffering device for pole group in storage battery |
| CN204216100U (en) * | 2014-09-19 | 2015-03-18 | 许玉林 | A kind of columniform battery cap |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505164A (en) * | 2016-12-12 | 2017-03-15 | 苏州安靠电源有限公司 | A kind of anode block and the battery with the block |
| CN106549120A (en) * | 2016-12-12 | 2017-03-29 | 苏州安靠电源有限公司 | Anode block and the battery with the block |
| CN111173975A (en) * | 2020-01-06 | 2020-05-19 | 王晓华 | Explosion-proof valve based on lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SUZHOU ANKAO ENERGY CO., LTD. Free format text: FORMER OWNER: XU YULIN Effective date: 20150727 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150727 Address after: Suzhou City, Jiangsu province 215000 Industrial Park Suzhou Huahong Street No. 29 Applicant after: Suzhou peace is by Electrosource, Inc. Address before: 310018, No. 25, No. 339, Hangzhou economic and Technological Development Zone, Hangzhou, Zhejiang province (can be love) Applicant before: Xu Yulin |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150107 |